Portion of a front face of a headgear for a respiratory mask



FIG. 1 is a portion of a front face of a headgear for a respiratory mask according to our design.

The thickness of the headgear forms no part of the claimed design.

The broken lines in FIG. 1 show environment or structure of the headgear which are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a portion of a front face of a headgear for a respiratory mask, as shown and described. 